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【单选题】
队列研究证明暴露因素E是疾病D的危险因素（RR＝3，P<0.05）。但进行以医院为基础的病例对照研究时，发现病例与对照组暴露情况没有显著性差异（OR=1.1，P>0.05）。进一步分析显示，这种病例对照研究与队列研究结果之间的差异，是因为患者在诊断出此病后往往会改变其行为习惯，从而使患者的暴露情况改变。这属于下列哪一种偏倚？（）
A.
检出偏倚
B.
易感性偏倚
C.
Neyman偏倚
D.
Berkson’s偏倚
E.
诊断怀疑偏倚
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举一反三
【单选题】力的法定计量单位是（）。
A.
牛顿（N）；
B.
公斤（kg）；
C.
千克（kg）；
D.
达因（dyn）。
查看完整题目与答案
【单选题】力的法定计量单位是（）。
A.
千克力（kgf）
B.
达因（dyn）
C.
吨（t）
D.
牛顿（N）
查看完整题目与答案
【单选题】力的法定计量单位是( )。
A.
千克力 (kgf)
B.
达因（ dyn ）
C.
kg
D.
牛顿N
查看完整题目与答案
【单选题】力的法定计量单位是( )
A.
kgf
B.
Pf
C.
N
D.
tf
查看完整题目与答案
【单选题】In 1943, when I was 4, my parents moved from Coeur d’Alene, Idaho, to Fairbanks, Alaska, where adventure was never far away. We arrived in the summer, just in time to enjoy the midnight sun. All that ...
A.
Leonhard was good at driving dog sleds.
B.
The author spent his whole childhood in Alaska.
C.
Leonhard often visited the author’s family after 1950.
D.
The author suffered a lot while taking the dog sled in Alaska.
查看完整题目与答案
【单选题】In 1943, when I was 4, my parents moved from Coeur d’Alene, Idaho, to Fairbanks, Alaska, where adventure was never far away. We arrived in the summer, just in time to enjoy the midnight sun. All that ...
A.
He learned to smoke.
B.
He was locked in a basement.
C.
He was arrested by the police.
D.
He nearly caused a fire accident.
查看完整题目与答案
【简答题】My name is Damian Costa. I was born in a small village in Italy in 1952. I spent the first few Years of my life there before my family 1 to Perth Australia. We arrived in Australia in the summer of 19...
查看完整题目与答案
【单选题】建造 “地坑院”民居的自然条件是 ( )
A.
土质黏重，不易挖掘
B.
土壤直立性好，不易坍塌
C.
地下水浅，易挖出水
D.
夏季降水多，地坑易蓄水
查看完整题目与答案
【单选题】Under payment in advance, the importer makes ________ to the supplier before the shipment of goods is done.
A.
full payment
B.
partial payment
C.
no payment
D.
most payment
查看完整题目与答案
【判断题】Under payment by L/C, all the documents shall be presented to the negotiation bank before the L/C expiry date.
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】力的法定计量单位是（）。
A.
牛顿（N）；
B.
公斤（kg）；
C.
千克（kg）；
D.
达因（dyn）。
查看完整题目与答案
【单选题】力的法定计量单位是（）。
A.
千克力（kgf）
B.
达因（dyn）
C.
吨（t）
D.
牛顿（N）
查看完整题目与答案
【单选题】力的法定计量单位是( )。
A.
千克力 (kgf)
B.
达因（ dyn ）
C.
kg
D.
牛顿N
查看完整题目与答案
【单选题】力的法定计量单位是( )
A.
kgf
B.
Pf
C.
N
D.
tf
查看完整题目与答案
【单选题】In 1943, when I was 4, my parents moved from Coeur d’Alene, Idaho, to Fairbanks, Alaska, where adventure was never far away. We arrived in the summer, just in time to enjoy the midnight sun. All that ...
A.
Leonhard was good at driving dog sleds.
B.
The author spent his whole childhood in Alaska.
C.
Leonhard often visited the author’s family after 1950.
D.
The author suffered a lot while taking the dog sled in Alaska.
查看完整题目与答案
【单选题】In 1943, when I was 4, my parents moved from Coeur d’Alene, Idaho, to Fairbanks, Alaska, where adventure was never far away. We arrived in the summer, just in time to enjoy the midnight sun. All that ...
A.
He learned to smoke.
B.
He was locked in a basement.
C.
He was arrested by the police.
D.
He nearly caused a fire accident.
查看完整题目与答案
【简答题】My name is Damian Costa. I was born in a small village in Italy in 1952. I spent the first few Years of my life there before my family 1 to Perth Australia. We arrived in Australia in the summer of 19...
查看完整题目与答案
【单选题】建造 “地坑院”民居的自然条件是 ( )
A.
土质黏重，不易挖掘
B.
土壤直立性好，不易坍塌
C.
地下水浅，易挖出水
D.
夏季降水多，地坑易蓄水
查看完整题目与答案
【单选题】Under payment in advance, the importer makes ________ to the supplier before the shipment of goods is done.
A.
full payment
B.
partial payment
C.
no payment
D.
most payment
查看完整题目与答案
【判断题】Under payment by L/C, all the documents shall be presented to the negotiation bank before the L/C expiry date.
A.
正确
B.
错误
查看完整题目与答案